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Paolo Benedetti

paolo.benedetti@ulssvicenza.it

Journal articles

2009
 
DOI   
PMID 
Benedetti, Rassu, Branscombe, Sefton, Pellizzer (2009)  Gemella morbillorum: an underestimated aetiology of central nervous system infection?   J Med Microbiol Aug  
Abstract: A case is reported of cerebellar abscess and diffuse cerebritis due to Gemella morbillorum. The clinical course was 'biphasic', developing with an acute meningeal infection followed shortly afterwards by suppuration in the cerebellar and cerebral parenchyma; this pattern seemed to suggest a latent survival of the aetiological agent, probably within the central nervous system (CNS), despite systemic antibiotic therapy. Based upon a review of cases so far described, infectious pictures of the CNS caused by G. morbillorum appear to be an emerging reality.
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2008
 
DOI   
PMID 
Paolo Benedetti, Giampietro Pellizzer, Francesca Furlan, Roberto Nicolin, Mario Rassu, Armine Sefton (2008)  Staphylococcus caprae meningitis following intraspinal device infection.   J Med Microbiol 57: Pt 7. 904-906 Jul  
Abstract: A case is reported of Staphylococcus caprae meningitis due to infection of an intraspinal analgesia pump. The subclinical and pauci-symptomatic clinical course of the infection strongly suggested a chronic device contamination.
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DOI   
PMID 
G Pellizzer, P Mantoan, L Timillero, B Allegranzi, U Fedeli, E Schievano, P Benedetti, M Saia, H Sax, P Spolaore (2008)  Prevalence and risk factors for nosocomial infections in hospitals of the veneto region, north-eastern Italy.   Infection 36: 2. 112-119 Apr  
Abstract: OBJECTIVE: The study aimed to assess prevalence and risk factors for nosocomial infection (NI) in 21 hospitals of the Veneto Region (Italy). METHODS: In May 2003, a one-week-period prevalence study of NI was carried out in 21 hospitals, representing 63% of all hospital beds for acute patients of the Veneto Region. Intensive care units represented 84% of all intensive care beds of the Region. Long term care, neonatal intensive care, burn, psychiatric and dermatology units were excluded. RESULTS: Overall, 6,352 patients were surveyed. The prevalence of NI was 7.6% (range 2.6%-17.7%), while 6.9% of patients (range 2.6%-15.5%) were affected by at least one NI. The prevalence of patients with NI in medical, surgical and intensive care areas was 6.6%, 5.0% and 25.8%, respectively. The sites most frequently affected were the following: urinary tract (28.4%), surgical site (20.3%), blood stream (19.3%), pulmonary and lower respiratory tract (17.6%). At multivariate analysis risk factors independently associated to NI were: Charlson index score >1, severity of underlying disease, exposure to antibiotics, surgical intervention, trauma at admission, presence of central venous catheter >24 h, urinary catheter, intubation, tracheostomy, and duration since admission >15 days. CONCLUSION: The study provided baseline data of NI in the Veneto Region hospitals. It showed that NI are frequent, and display a wide inter-hospital variability of rates. The highest prevalence has been reported in intensive care units. The unusual high frequency of blood stream infections and the relatively lower prevalence rate of surgical site infections highlighted the limits of prevalence studies.
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2006
 
PMID 
P Pellizzer, A Todescato, P Benedetti, P Colussi, P Conz, M Cinco (2006)  Leptospirosis following a flood in the Veneto area, North-east Italy.   Ann Ig 18: 5. 453-456 Sep/Oct  
Abstract: In August 2002, an exceptional flood devastated a suburban area in the surroundings of Vicenza, North-east Italy. A fatal case of haemorrhagic pneumonia, which was presumptively diagnosed as leptospirosis, was observed as a consequence of the inundation. A local seroepidemiological survey was activated thereafter, with the principal aim of evaluating the risk of infection with Leptospirae in the population exposed to the flood. A 6.8% seroconversion rate was found in the population studied; however, the case previously observed remained unique, since an overt outbreak of leptospirosis did not occur.
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DOI   
PMID 
Giuseppe Todeschini, Cristina Tecchio, Carlo Borghero, Anna D'Emilio, Enrico Pegoraro, Fausto de Lalla, Paolo Benedetti, Paolo Spolaore, Giampietro Pellizzer (2006)  Association between Enterococcus bacteraemia and death in neutropenic patients with haematological malignancies.   J Infect 53: 4. 266-273 Oct  
Abstract: Fatality rates and prognostic factors for mortality due to Enterococcus spp. bacteraemia have not yet been fully defined in the setting of neutropenic patients affected with haematological malignancies. We have performed a retrospective, multi-centre cohort study on 98 episodes of Enterococcus bacteraemia occurring in patients hospitalised from January 1984 to December 2001 at the oncohaematology units in two tertiary-care hospitals (Verona Hospital and Vicenza Hospital, in north-east Italy). E. faecalis was isolated in 52 cases (53%), E. faecium in 39 (39.8%), E. avium in four, E. durans in one, and untyped Enterococcus spp. in two other cases; vancomycin resistance was detected in 15 (15.3%) isolates. A global mortality rate of 41.8% (41/98 cases) was revealed; Enterococcus spp. bacteraemia was associated with a fatal outcome in 29/98 cases (29.5%). The following variables were independently associated with an increased risk of death by multivariate analysis of survival: age > or =50 years (OR 3.74; 95% CI 1.35-10.32), pneumonia (OR 4.70; 95% CI 1.67-13.20), and shock (OR 13.7; 95% CI 1.23-152.43), while the initial phase of haematological disease (responsive to chemotherapy) appeared to be protective (OR 0.23; 95% CI 0.008-0.64, P level 0.005); however, pneumonia alone (OR 7.2, 95% CI 2.52-20.88) was independently associated with fatal outcome by multivariate analysis for death related to enterococcal bacteraemia. In our experience, the poor outcome proper to enterococcal bacteraemia appears to be directly related to underlying disease, patient's age, presence of pneumonia and shock; in contrast, severe neutropaenia, antibiotic resistance, and species of Enterococcus do not appear to affect the fatality rate significantly.
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2005
 
DOI   
PMID 
Mario Rassu, Giulio Bertoloni, Carlo Mengoli, Antonella Peron, Paolo Benedetti, Giorgio Palu' (2005)  HPV genotype prevalence in cervical specimens with abnormal cytology: a report from north-east Italy.   Scand J Infect Dis 37: 6-7. 476-481  
Abstract: We have investigated the prevalence of HPV DNA in cervical samples collected from 1335 women with abnormal Pap test and analysed the degree of association of HPV genotype with cervical cytological abnormality and also with patient age. The study was principally aimed at providing some cross-sectional figures on the epidemiology of HPV in our area, where the ethnic background is expected to rapidly evolve due to extensive immigration from overseas. 471 (35.3%) of the 1335 patients screened were positive for HPV DNA. A clear association was observed between cytological findings and the proportion of patients with positive HPV PCR, namely 24.0% HPV positivity in the ASCUS group (atypical squamous cells of undetermined significance), 48.7% in LSIL group (low grade squamous intraepithelial lesions), and 71.9% in HSIL group (high grade squamous intraepithelial lesions) (p-value < 0.001). High-risk (HR) HPV prevalence appeared to be different from other areas of the world; we have detected a high prevalence rate of HPV-16, 31, and 58 and a low prevalence rate of HPV-18 and 11. The prevalence of both HR and low risk (LR) genotype groups was clearly related to age (p-value < 0.001), since the prevalence of LR group had a nadir between 41 and 50 y of age and 2 peaks at 15-20 y and at over 60 y, while the curve of prevalence of HR genotypes displayed an almost inverse trend.
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2003
 
PMID 
Giovanna Fattovich, Irene Zagni, Eliseo Minola, Martina Felder, Pierangelo Rovere, Antonio Carlotto, Sergio Suppressa, Anna Miracolo, Claudio Paternoster, Caterina Rizzo, Angelo Rossini, Paolo Benedetti, Marco Capanni, Chiara Ferrara, Paolo Costa, Tosca Bertin, Maurizio Pantalena, Lorenzo Lomonaco, Chiara Scattolini, Giuseppe Mazzella, Massimo Giusti, Sergio Boccia, Stefano Milani, Renato Marin, Maria Lisa Ribero, Alessandro Tagger (2003)  A randomized trial of consensus interferon in combination with ribavirin as initial treatment for chronic hepatitis C.   J Hepatol 39: 5. 843-849 Nov  
Abstract: BACKGROUND/AIMS: The aim of the present, open-labeled, randomized study was to determine the efficacy and safety of different doses of consensus interferon plus ribavirin in the initial treatment of chronic hepatitis C. METHODS: One hundred and one genotype 2/3 patients were randomized to receive 9 mcg (group A, n=48) or 18 mcg (group B, n=53) of consensus interferon thrice weekly plus ribavirin (1000/1200 mg/daily) for 24 weeks and 92 genotype 1 patients to receive 9 mcg (group C, n=47) or 18 mcg (group D, n=45) of consensus interferon plus ribavirin for 48 weeks. RESULTS: In an intention-to-treat analysis, the sustained virologic response at 24-week follow-up was 69% and 66% for group A and B (P=0.77) and 40% and 36% for group C and D (P=0.63). The overall sustained response was 67% and 38% in patients with genotype 2/3 and 1, respectively. Among genotype 1 patients the sustained virologic response was 39% and 41% for high or low baseline viremia levels. CONCLUSIONS: Higher consensus interferon dose does not increase sustained virologic response. Naive genotype 1 patients may achieve significant response rate of approximately 40% if treated with 9 mcg of consensus interferon plus ribavirin for 48 weeks.
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2002
 
PMID 
G Caruso, C Zasio, F Guzzo, C Granata, V Mondardini, E Guerra, E Macrì, P Benedetti (2002)  Outbreak of African tick-bite fever in six Italian tourists returning from South Africa.   Eur J Clin Microbiol Infect Dis 21: 2. 133-136 Feb  
Abstract: In May 1999, a cluster of cases of African tick-bite fever was detected in six Italian tourists who had returned from South Africa. All of the patients had moderate fever and cutaneous eschars. Regional lymphangitis was observed in three of the patients and skin rash in two. By comparing the number of eschars with the number of detectable bite sites it was suggested that at least two-thirds of the biting vectors were capable of transmitting Rickettsia africae. The clinical course of disease was mild in all cases, and all but one of the patients recovered spontaneously before antibiotic treatment was initiated. The diagnosis of African tick-bite fever was confirmed serologically using both microimmunofluorescence and Western blot tests.
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2001
 
DOI   
PMID 
F de Lalla, G Pellizzer, M Strazzabosco, Z Martini, G Du Jardin, L Lora, P Fabris, P Benedetti, G Erle (2001)  Randomized prospective controlled trial of recombinant granulocyte colony-stimulating factor as adjunctive therapy for limb-threatening diabetic foot infection.   Antimicrob Agents Chemother 45: 4. 1094-1098 Apr  
Abstract: Adult diabetic patients admitted to our Diabetes Center from September 1996 to January 1998 for severe, limb-threatening foot infection were consecutively enrolled in a prospective, randomized, controlled clinical study aimed at assessing the safety and efficacy of recombinant human granulocyte colony-stimulating factor (G-CSF) (lenograstim) as an adjunctive therapy for the standard treatment of diabetic foot infection. Forty patients, all of whom displayed evidence of osteomyelitis and long-standing ulcer infection, were randomized 1:1 to receive either conventional treatment (i.e., antimicrobial therapy plus local treatment) or conventional therapy plus 263 microg of G-CSF subcutaneously daily for 21 days. The empiric antibiotic treatment (a combination of ciprofloxacin plus clindamycin) was further adjusted, when necessary, according to the results of cultures and sensitivity testing. Microbiologic assessment of foot ulcers was performed by both deep-tissue biopsy and swab cultures, performed at enrollment and on days 7 and 21 thereafter. Patients were monitored for 6 months; the major endpoints (i.e., cure, improvement, failure, and amputation) were blindly assessed at weeks 3 and 9. At enrollment, both patient groups were comparable in terms of both demographic and clinical data. None of the G-CSF-treated patients experienced either local or systemic adverse effects. At the 3- and 9-week assessments, no significant differences between the two groups could be observed concerning the number of patients either cured or improved, the number of patients displaying therapeutic failure, or the species and number of microorganisms previously yielded from cultures at day 7 and day 21. Conversely, among this small series of patients the cumulative number of amputations observed after 9 weeks of treatment appeared to be lower in the G-CSF arm; in fact, only three patients (15%) in this group had required amputation, whereas nine patients (45%) in the other group had required amputation (P = 0.038). In conclusion, the administration of G-CSF for 3 weeks as an adjunctive therapy for limb-threatening diabetic foot infection was associated with a lower rate of amputation within 9 weeks after the commencement of standard treatment. Further clinical studies aimed at precisely defining the role of this approach to this serious complication of diabetes mellitus appear to be justified.
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PMID 
G Pellizzer, M Strazzabosco, S Presi, F Furlan, L Lora, P Benedetti, M Bonato, G Erle, F de Lalla (2001)  Deep tissue biopsy vs. superficial swab culture monitoring in the microbiological assessment of limb-threatening diabetic foot infection.   Diabet Med 18: 10. 822-827 Oct  
Abstract: AIMS : The results of ulcer swabbing vs. deep tissue biopsy have been compared prospectively in 29 diabetic patients with limb-threatening foot infection, to investigate the effectiveness and reliability of each method, and to evaluate whether any of the two could be more suitable for the microbiological follow-up of severe lesions. METHODS : Microbiological samples were collected by using both methods at fixed intervals after therapy commencement (i.e. at day 0, 7, 14, and 30). Statistical comparison was performed between the results of each sampling procedure after the end of follow-up. RESULTS : At enrolment, the mean number of isolates per patient was 2.34 by swabbing and 2.07 by tissue biopsy sampling; the rate of isolation for anaerobes with the two methods was 35% and 25%, respectively; no statistical differences could be observed between the two procedures in terms of either species or frequency of isolation. Anaerobic species were never detected after the first 2 weeks of appropriate treatment, and those ulcers which were still active at day 30 yielded almost exclusively Gram-positive bacteria. At the end of follow-up, deep tissue cultures appeared to exhibit a higher diagnostic sensitivity with respect to swabs. CONCLUSIONS : Swabbing and deep tissue cultures appear to be equally reliable for the initial monitoring of antimicrobial treatment in severe diabetic foot infection. However, our experience seems to suggest that deep tissue might be more sensitive than swabbing for monitoring those isolates that have been selected for antibiotic resistance, i.e. those from ulcers that are still active after 30 days of treatment.
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1999
 
PMID 
P Fabris, D Infantolino, M R Biasin, G Marchelle, E Venza, V Terribile Wiel Marin, P Benedetti, G Tositti, V Manfrin, F de Lalla (1999)  High prevalence of HCV-RNA in the saliva cell fraction of patients with chronic hepatitis C but no evidence of HCV transmission among sexual partners.   Infection 27: 2. 86-91 Mar/Apr  
Abstract: The aims of this study were to evaluate the prevalence of HCV-RNA in different fractions of saliva taken from patients with chronic hepatitis C, to establish whether virologic parameters or disease severity exert any influence on the detectability of HCV-RNA in saliva, and to evaluate the prevalence of HCV infection in partners of HCV-infected subjects with respect to the presence of HCV-RNA in saliva. Sera samples and different fractions of saliva (whole saliva, surnatant, and cell fraction) from 48 subjects (45 with chronic hepatitis C and three healthy anti-HCV+ carriers) were examined for HCV-RNA by RT nested PCR and DEIA hybridization. HCV-RNA-positive sera were also tested for genotype and viral titer (bDNA2 method). Twenty-seven stable sexual partners (25 females and 2 males) were screened for anti-HCV antibodies at least twice over a minimum of 12 months. HCV-RNA was detected in the sera of 39/45 patients and of 22/39 viremic patients. In all of the latter, the presence of HCV-RNA was restricted to the cell fraction. Viral titer was significantly higher in patients with HCV-RNA in saliva than in those without (12.3 x 10(6) versus 4.6 x 10(6) eq/ml, P < 0.01). HCV-RNA positivity was unrelated to genotype, duration of disease, Hepatitis Activity Index scores or transaminase levels. Anti-HCV was positive in one of 13 sexual partners of patients with HCV-RNA in saliva and in 1/14 of those without (P = NS). In conclusion, HCV-RNA is detectable in the cell fraction of saliva in a high proportion of highly viremic patients with chronic hepatitis C, but its presence does not seem to be associated with an increased risk of HCV transmission among sexual partners.
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PMID 
P Fabris, G Tositti, G Mazzella, A R Zanetti, R Nicolin, G Pellizzer, P Benedetti, F de Lalla (1999)  Effect of ursodeoxycholic acid administration in patients with acute viral hepatitis: a pilot study.   Aliment Pharmacol Ther 13: 9. 1187-1193 Sep  
Abstract: BACKGROUND: Ursodeoxycholic acid (UDCA) is able to improve biochemical markers of cholestasis, with a parallel decrease in transaminases, in various cholestatic liver diseases. AIM: To evaluate the effects of UDCA administration on acute viral hepatitis-related cholestasis and the course of acute viral hepatitis. METHODS: Seventy-nine consecutive patients with acute viral hepatitis (HBV: 43, HCV: 11, HAV: 15, HEV: 3, Non A-E: 7) were randomized to receive either UDCA for 3 weeks or no treatment. Liver biochemistry and serum bile acid determinations were run at weekly intervals. RESULTS: No significant differences were observed in mean percentage decreases in transaminases between treated and untreated patients. By contrast, cholestatic indexes decreased significantly more quickly in patients treated with UDCA than in controls, and this effect was more evident in patients with increasing alanine transaminase levels at admission. After a peak at the end of the first week of therapy, serum levels of conjugated ursodeoxycholic acid (CUDCA) showed a gradual decrease. Conjugated cholic acid (CCA) and chenodeoxycholic acid (CCDCA) showed a progressive decrease with the resolution of viral hepatitis, but no influence of UDCA administration was observed. CONCLUSIONS: Our study demonstrates that UDCA significantly improves cholestatic indices in patients with acute viral hepatitis, but this effect does not seem to affect the course of the illness.
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PMID 
P Fabris, F Marranconi, L Bozzola, M R Biasin, F De Lazzari, M Plebani, P Benedetti, G Tositti, G Pellizzer, C Stecca, F de Lalla (1999)  Fibrogenesis serum markers in patients with chronic hepatitis C treated with alpha-IFN.   J Gastroenterol 34: 3. 345-350 Jun  
Abstract: The correlation between therapeutic response and liver fibrogenesis was studied in serum and liver specimens taken from 31 patients treated with alpha-interferon (IFN) (14 sustained responders and 17 non-responders) for chronic hepatitis C. Serum samples, collected before therapy, and at further 6-month intervals over 2 years, were tested for markers of liver neofibrogenesis. Serum N-terminal procollagen III peptide (PIIINP) displayed a significant and persistent decrease (P < 0.05) in sustained responders but not in non-responders; significantly lowered (P < 0.05) mean levels of C-terminal procollagen I peptide (PICP) were transiently observed in both patient groups, apparently as a result of IFN administration. Serum laminin (Lam) levels remained unchanged. One year after the cessation of treatment, liver biopsy re-testing showed an improvement in necro-inflammatory scores only in sustained responders, with the histological fibrosis scores remaining unaltered in both groups. IFN treatment seemed to exert an influence on serum levels of markers of hepatic connective tissue turnover even in patients that did not respond to therapy, while no effect was observed on preexistent liver fibrosis.
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1998
 
PMID 
P Fabris, D Infantolino, M R Biasin, P Benedetti, G Tositti, C Bettini, G Marchelle, F de Lalla (1998)  HGV/GBV-C infection in patients with acute hepatitis of different etiology and in patients with chronic hepatitis C.   J Gastroenterol 33: 1. 57-61 Feb  
Abstract: To investigate the prevalence of hepatitis G virus (HGV/GBV-C) in patients with liver disease and to confirm its hypothesized ability to cause liver damage, we studied 130 subjects; 61 had chronic hepatitis C virus infection and 69 had acute hepatitis of either defined etiology (n = 57) or of unknown origin (n = 12). Positivity for HGV/GBV-C RNA was detected in 10 of the 61 subjects with chronic hepatitis C (16.3%) and in 11 of the 57 subjects with acute hepatitis of defined etiology (19%), whereas we failed to detect HGV/ GBV-C viremia in subjects with hepatitis of nonestablished etiology. Patients exhibiting positivity for HGV/GBV-C RNA were found to be comparable to those exhibiting negativity for HGV/GBV-C RNA in terms of both liver function tests and Knodell's score (in liver biopsies); the affect of HGV/GBV-C infection on the biohumoral and histological activity in patients with chronic hepatitis C therefore appears to be minimal or absent. Similar clinical features were observed in patients with acute hepatitis of known etiology whether they were positive or negative for HGV/GBV-C RNA. However, long-term clinical studies are still required to clarify the actual impact of HGV/GBV-C co-infection. In our geographic, i.e., a region or north-east Italy, HGV/GBV-C infection appears to be strictly related to intravenous drug use, and this agent does not seem to be responsible for acute hepatitis of unknown etiology; other etiological agents are probably involved.
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PMID 
P Fabris, M R Biasin, D Infantolino, L RomanĂ³, P Benedetti, G Tositti, G P Pellizzer, A R Zanetti, C Stecca, G Marchelle, F de Lalla (1998)  HGV/GBV-C in liver tissue and in sera from patients with chronic hepatitis C.   Infection 26: 5. 283-287 Sep/Oct  
Abstract: Forty-eight persons (M = 45, F = 3; age range = 20-53, mean = 32.2) affected with chronic hepatitis C were tested for HGV/GBV-C RNA and HCV-RNA by nested PCR and DEIA in serum and in liver specimens to evaluate the prevalence and the impact of HGV/GBV-C coinfection in patients with chronic HCV-related hepatitis. Sera were also assayed for antibodies to HGV/GBV-C E2 protein. Serum HGV/GBV-RNA could be detected in nine (19%) patients, and anti-E2 antibodies in 22 (46%) patients. The presence of HGV/GBV-C RNA or anti-E2 antibodies was mutually exclusive. The cumulative prevalence of HGV/GBV-C infection was 65% (31/48); the majority of these patients (26/31, 84%) were intravenous drug users (IVDUs). In eight of nine patients viraemic for HGV/GBV-C, RNA positivity could be revealed even in liver specimens; these eight patients were also positive for HCV-RNA both in serum and the liver and did not exhibit any specific association with HCV genotype. HGV/GBV-C RNA negative strand RT-PCR testing was negative in all of the eight liver specimens, providing little support to the hypothesis that liver represents the primary site of HGV/GBV-C replication. Moreover, patients with HGV/GBV-C and HCV coinfection were comparable to those with HCV infection alone in terms of biochemistry and liver histology.
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1997
 
PMID 
T Gindro, A Arrigoni, G Martinasso, F Rosina, S Perardi, N Cappello, P Benedetti, G C Actis, G Verme, M Rizzetto (1997)  Monoethyl glycine xylidide (MEGX) test evaluation in primary biliary cirrhosis: comparison with Mayo score.   Eur J Gastroenterol Hepatol 9: 12. 1155-1159 Dec  
Abstract: OBJECTIVE: To evaluate the clinical and prognostic value of the monoethyl glycine xylidide (MEGX) test in patients with primary biliary cirrhosis (PBC) in comparison with the Mayo score (Mayo). DESIGN: A prospective study. METHODS: MEGX determinations at enrolment were compared to the Mayo score as well as to conventional clinical and laboratory parameters in 92 patients with PBC. RESULTS: The MEGX test yielded higher basal values in long-term survivors compared to patients that were transplanted or died during the follow up; patients belonging to the last two groups displayed significantly higher Mayo scores at baseline. Although values for prothrombin time, serum albumin, alkaline phosphatase, cholesterol, cholinesterase, and gamma-glutamyltranspeptidase were significantly different in survivors compared to either transplanted or dead patients at univariate analysis, the multivariate analysis demonstrated an independent prognostic value for the MEGX and the Mayo score solely. The best discrimination between probability of death or survival was achieved with a cutoff value of 25 ng/ml for the MEGX test and of 6 for the Mayo score. When plotting both MEGX test and Mayo score, the point distribution displayed a bimodal trend, and the wide range of values given by the MEGX test was observed to supply a more precise assessment of liver reservoir and a better discrimination of progressive changes in liver function; the limited range of the Mayo score for values below 6 could only identify gross deteriorations. CONCLUSION: Our data show that the asymptomatic progressive functional deterioration occurring during the natural history of PBC can be monitored by the MEGX test because it appears to be able to identify abnormalities prior to the onset of alterations in conventional laboratory and/or clinical parameters which are likely to affect the Mayo score.
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PMID 
P Fabris, L Bozzola, P Benedetti, M Scagnelli, R Nicolin, V Manfrin, C Scarparo, F De Lalla (1997)  H. pylori infection in HIV-positive patients. A serohistological study.   Dig Dis Sci 42: 2. 289-292 Feb  
Abstract: Sixty-seven consecutive patients infected with the human immunodeficiency virus (HIV-1), 72% of which with overt AIDS, were examinated by upper endoscopy due to various indications and evaluated for the prevalence of H. pylori infection. The infection was studied by performing both histological examination of gastric biopsies and serological testing for anti-H. pylori IgG antibodies. The H. pylori prevalence rate was 55% in histology; no significant differences were observed in HIV-infected subjects and those with overt AIDS (52% vs 63%, respectively; P = NS). Positive histological testing appeared to be directly related to the peripheral CD4+ lymphocyte count (minimum rates of 43% were detected in patients with CD4+ < 100 x 10(6)/liter and maximum rates of 78% in patients with CD4+ > 200 x 10(6)/liter, respectively; P < 0.05) and inversely related to the frequency of antibiotic treatments performed over the six months prior to endoscopy. Low CD4+ counts were also apparently associated with low-grade H. pylori infection. Serological testing was positive for anti-H. pylori IgG antibodies in 39% of patients; compared to histology, serology displayed a sensitivity of 57% and a specificity of 81%. The discrepancy between histological and serological positive results for H. pylori was noted to be higher in the more advanced phases of HIV infection. Based upon our results, the serological testing for anti-H. pylori IgG antibodies seems to require cautious interpretation in HIV-positive patients.
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1996
1995
1994
 
PMID 
A Arrigoni, T Gindro, G Aimo, N Cappello, A Meloni, P Benedetti, G P Molino, G Verme, M Rizzetto (1994)  Monoethylglicinexylidide test: a prognostic indicator of survival in cirrhosis.   Hepatology 20: 2. 383-387 Aug  
Abstract: The aim of this study was to assess the value of the monoethylglicinexylidide assay, a dynamic liver function test based on the determination of the serum concentration of lidocaine major metabolite, as a predictor of survival in cirrhosis. For this purpose, the predictive value of monoethylglicinexylidide was evaluated in comparison with the Pugh score, ascites, encephalopathy and a number of different biochemical parameters as collected from the prospective follow-up of 118 patients with cirrhosis. A stepwise regression analysis was performed on the variables of prognostic value according to the Cox model and with respect to 1-yr survival; because Pugh score and monoethylglicinexylidide were the sole variables selected, they were proved to supply independent prognostic information. The most reliable cutoff values for discrimination between death and survival were 25 ng/ml or less for monoethylglicinexylidide and less than 9 for the Pugh score. In 74 patients without overt signs of liver failure (i.e., Pugh < or = 9), monoethylglicinexylidide provided a wide range of results (i.e., 4 to 77 ng/ml), namely values ranging from very low to elevated. Of the 38 patients with satisfactory Pugh scores (< or = 9) but poor monoethylglicinexylidide values (< or = 25), 11 died during follow-up and 3 underwent liver transplantation, despite having shown no clinical signs of liver failure at entry. On the bases of discriminant levels, the monoethylglicinexylidide test is suitable for adoption as a reliable and sensitive indicator of survival in patients with cirrhosis because it supplies more accurate prognostic information compared with the Pugh score.(ABSTRACT TRUNCATED AT 250 WORDS)
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1992
 
PMID 
M Castellani Pastoris, P Benedetti, D Greco, E Volpi, N Billo, F J Fehrenbach, P Hohl, I Horbach, G Wewalka (1992)  Six cases of travel-associated Legionnaires' disease in Ischia involving four countries.   Infection 20: 2. 73-77 Mar/Apr  
Abstract: The detection of travel-associated legionellosis can be extremely difficult; hence, an extensive case investigation is recommended in pneumonia-striken travellers and tourists, who are particularly at risk of acquiring the disease. On the Island of Ischia (Isola d'Ischia, Naples, Italy) a total of six cases of Legionnaires' disease occurred from 1986 to 1990. All patients (one man and two women from Germany, one Austrian woman, one Swiss man, and one Italian woman) had taken thermal baths and stayed in local hotels; they all experienced severe pneumonia, and three of them died. These cases were associated with hotels, and the hot-water supply was presumed to have transmitted the infection. Remedial procedures were applied to the hot-water plumbing of the hotels according to the WHO recommendations and were proved to be effective. The occurrences described in this paper stress the importance of rapid and accurate reporting of diagnosed cases to the country where the infection was probably acquired, in order to ensure early detection of endemic foci and emerging clusters of legionellosis.
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1991
 
PMID 
M Castellani Pastoris, P Benedetti, D Greco (1991)  10 years of legionellosis in Italy (June 1980-June 1990)   Ann Ist Super Sanita 27: 2. 289-295  
Abstract: Legionella infection was recognized as a cause of human disease in 1976, following the occurrence of an epidemic at Bellevue Stratford Hotel, Philadelphia, USA. In the subsequent years, various cases, both sporadic and epidemical, have been reported worldwide. In Italy, the first reports date from 1980. The compulsory notification of the disease was established in February 1983, and a few months later a National Surveillance Programme started operating at the Istituto Superiore di Sanità, Rome. Up to June 30, 1990, 542 confirmed cases of legionellosis were reported. For 249 of them, data of clinical and epidemiological significance are available. The incidence of the disease is higher in males (76% of total cases) and 51.5% of the patients are aged more than 50 years. During the clinical course, the occurrence of hepatic and/or renal dysfunction, cough, dyspnoea, diarrhoea and confusion was documented in a significant proportion of patients. The fatality rate was 12.4%. The disease occurred both sporadically and epidemically. Namely, clusters and outbreaks were detected all over the country, accounting for a total of 97 cases. Hospital patients should be regarded as an important category at risk for infection. The occurrence is also frequent among travellers and tourists, because of the stressing factors that may increase individual susceptibility, as well as the more frequent contact with infective sources. In Italy, the major risk of infection appears connected with water plumbing systems of hotels, residential houses and hospitals, where oxygen bubble-humidifiers have been found to represent an important source of infection. On the contrary, the association of human infection with air conditioning systems has not been evidenced up-to-now.
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1989
 
PMID 
M Tumbarello, M Giuliani, P Benedetti, P Pezzotti, C Valdarchi, D Abeni, M Di Fabio, C Oliva, F Ricci, B Suligoi (1989)  A national voice for information about HIV infections: the Italian state AIDS hot-line.   Public Health 103: 6. 447-454 Nov  
Abstract: Because of the variety of problems connected with the AIDS epidemic, there is an urgent need for qualified information and counselling. In June 1987, The Italian Ministry of Health established a hot-line, acting within the National AIDS Operational Centre. Through the analysis of more than 39,000 calls received during the first year of activity, a clear outline has been obtained of the emotional impact of the disease on Italian public opinion, and of the problems raised. 67% of callers belong to 20-39 age group; the male/female ratio is 2:1. Interesting correlations have been found between the content of the questions and the sex, age, and type of caller. The vast majority of questions concerning basic concepts and notions about HIV infections are asked by no-risk-related subjects. During the first year, the percentage of questions asked by subjects actually at risk increased, and the questions themselves have become more specific.
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PMID 
P Benedetti, M Zaccarelli, M Giuliani, M Di Fabio, C Valdarchi, P Pezzotti, M Tumbarello, D Greco (1989)  The Italian AIDS 'hot-line': providing information to the people.   AIDS Care 1: 2. 145-152  
Abstract: The Italian AIDS hot-line has recently completed its first two operational years. Established as an emergency service, it was initially overloaded with calls, under the emotional impact of a new disease. As the average number of calls settled to around a hundred per day, a wider approach aimed at the concerns raised by callers has been possible. A particular effort has been made to handle psychological and social aspects of HIV infections. A large proportion of the questions analyzed (62,500) deal with doubts about transmission (30%), reliability of diagnostic tests (15%), and handling individual situations. Some categories of callers, such as drug users, parents or relatives of HIV-infected people, and seropositives often require experienced telephone counselling. HIV-positive callers follow the proportional distribution of AIDS cases in Italy: intravenous drug users forming the majority, followed by homosexuals and finally heterosexual subjects (reaching 10%, a value in accordance with trend projections). The demand for advice has increased over time, together with an evident refinement of question content.
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PMID 
D Greco, P Benedetti, P Pezzotti, M Tumbarello, F Ricci, S Vella, S Salmaso (1989)  Clinical picture of the onset of AIDS in 2911 adults in Italy   Medicina (Firenze) 9: 2. 209-212 Apr/Jun  
Abstract: Since 1982, 2911 adult AIDS cases have been officially reported in Italy up to December 31, 1988. The clinical presentation of all cases, reported to the Istituto Superiore di Sanità, Rome, and contained into the National AIDS Register, has been analyzed, with particular attention to opportunistic infections. 168 cases (mainly homosexual men) were found exclusively affected at diagnosis by Kaposi's Sarcoma (KS), while the other 2743 patients were affected by opportunistic infections and/or other pathologies. At diagnosis, 23.5% of patients had Pneumocystis carinii pneumonia (PCP), 32% esophageal or pulmonary candidiasis, and 7% cerebral toxoplasmosis. A decrease in frequency of Cytomegalovirus (CMV) diseases has been observed, as well as an increase of HIV encephalopathy from 1982 to 1988. The clinical picture of full-blown AIDS showed stability during the whole period of observation, with slight geographical variations.
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